path: root/drivers/media/video/omap3isp/ispvideo.c

/*
 * ispvideo.c
 *
 * TI OMAP3 ISP - Generic video node
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 *
 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 *	     Sakari Ailus <sakari.ailus@iki.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

#include <asm/cacheflush.h>
#include <linux/clk.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-ioctl.h>
#include <plat/iommu.h>
#include <plat/iovmm.h>
#include <plat/omap-pm.h>

#include "ispvideo.h"
#include "isp.h"


/* -----------------------------------------------------------------------------
 * Helper functions
 */

static struct isp_format_info formats[] = {
	{ V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8,
	  V4L2_MBUS_FMT_Y8_1X8, V4L2_PIX_FMT_GREY, 8, },
	{ V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10DPCM8, 8, },
	{ V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR10_1X10,
	  V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10, 10, },
	{ V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG10_1X10,
	  V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10, 10, },
	{ V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG10_1X10,
	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10, 10, },
	{ V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB10_1X10,
	  V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10, 10, },
	{ V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR10_1X10,
	  V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12, 12, },
	{ V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG10_1X10,
	  V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12, 12, },
	{ V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG10_1X10,
	  V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12, 12, },
	{ V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB10_1X10,
	  V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12, 12, },
	{ V4L2_MBUS_FMT_UYVY8_1X16, V4L2_MBUS_FMT_UYVY8_1X16,
	  V4L2_MBUS_FMT_UYVY8_1X16, V4L2_PIX_FMT_UYVY, 16, },
	{ V4L2_MBUS_FMT_YUYV8_1X16, V4L2_MBUS_FMT_YUYV8_1X16,
	  V4L2_MBUS_FMT_YUYV8_1X16, V4L2_PIX_FMT_YUYV, 16, },
};

const struct isp_format_info *
omap3isp_video_format_info(enum v4l2_mbus_pixelcode code)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(formats); ++i) {
		if (formats[i].code == code)
			return &formats[i];
	}

	return NULL;
}

/*
 * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
 * @video: ISP video instance
 * @mbus: v4l2_mbus_framefmt format (input)
 * @pix: v4l2_pix_format format (output)
 *
 * Fill the output pix structure with information from the input mbus format.
 * The bytesperline and sizeimage fields are computed from the requested bytes
 * per line value in the pix format and information from the video instance.
 *
 * Return the number of padding bytes at end of line.
 */
static unsigned int isp_video_mbus_to_pix(const struct isp_video